The Western has to be the single most exploited genre in film history and spans several sub-genres. For many students of film making, the "oater" became the basis of film making through six decades and created the profession of "stunt man".

For me the Western was my Saturday baby sitter. We would sit through two to four films for the price of one admission yes, I'm that old].

From my personal collection [which is far from complete} I offer the following:

10 -- Young Guns, Christopher Caine
9 -- The Wild Bunch, Paul Seydor
8 -- Rio Bravo, Howard Hawks
7 -- The Good, the bad and the ugly, Sergio Leone
6 -- The Professionals, Richard Brooks
5 -- Gunfight at the OK Corrall, John Sturges
4 -- The Man Who Shot Liberty Valance, John Ford
3 -- The Magnificent Seven, John Sturges
2 -- High Noon, Fred Zinneman
1 -- The Outlaw Jossie Wales, Clint Eastwood